STX's Hammer 1K evolves the defense-oriented Hammer design with stiffer, more rigid construction over the Hammer 900. A staple amongst collegiate and pro defenders such as 2021 PLL Champion, Jack Rowlett, STX's Hammer 1K is built to shut down the offensive, play by play. Sturdy, Defensive DesignTriple-strut Design: Greatly improves shape-retention and overall rigidity for a more consistent feel over its predecessor. Designed for an Elite Defense: The Hammer 1K head's more rigid design holds it shape better against checks to turnover and secure the ball at every opportunity. Elite BuildEnduraForm: STX's proprietary material forms their lightest head to date, without sacrificing durability. Speed Scoop: Built to snag ground balls with ease, regardless of attack angle. STX Hammer 1K Unstrung Lacrosse Head in White.